programs/explorer/systray.c - wine - Git at Google

 /*
  * Copyright (C) 2004 Mike Hearn, for CodeWeavers
  * Copyright (C) 2005 Robert Shearman
  *
  * This library is free software; you can redistribute it and/or
  * modify it under the terms of the GNU Lesser General Public
  * License as published by the Free Software Foundation; either
  * version 2.1 of the License, or (at your option) any later version.
  *
  * This library is distributed in the hope that it will be useful,
  * but WITHOUT ANY WARRANTY; without even the implied warranty of
  * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
  * Lesser General Public License for more details.
  *
  * You should have received a copy of the GNU Lesser General Public
  * License along with this library; if not, write to the Free Software
  * Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301, USA
  */

 /* There are two types of window involved here. The first is the
  * listener window. This is like the taskbar in Windows. It doesn't
  * ever appear on-screen in our implementation, instead we create
  * individual mini "adaptor" windows which are docked by the native
  * systray host.
  *
  * In future for those who don't have a systray we could make the
  * listener window more clever so it can draw itself like the Windows
  * tray area does (with a clock and stuff).
  */

 #include <assert.h>

 #define UNICODE
 #define _WIN32_IE 0x500
 #include <windows.h>
 #include <commctrl.h>

 #include <wine/debug.h>
 #include <wine/list.h>

 #include "explorer_private.h"

 WINE_DEFAULT_DEBUG_CHANNEL(systray);

 #define IS_OPTION_FALSE(ch) \
     ((ch) == 'n' || (ch) == 'N' || (ch) == 'f' || (ch) == 'F' || (ch) == '0')

 static const WCHAR adaptor_classname[] = /* Adaptor */ {'A','d','a','p','t','o','r',0};

 /* tray state */
 struct tray
 {
     HWND           window;
     struct list    icons;
 };

 /* an individual systray icon, unpacked from the NOTIFYICONDATA and always in unicode */
 struct icon
 {
     struct list    entry;
     HICON          image;    /* the image to render */
     HWND           owner;    /* the HWND passed in to the Shell_NotifyIcon call */
     HWND           window;   /* the adaptor window */
     HWND           tooltip;  /* Icon tooltip */
     UINT           id;       /* the unique id given by the app */
     UINT           callback_message;
 };

 static struct tray tray;
 static BOOL hide_systray;

 /* adaptor code */

 #define ICON_SIZE GetSystemMetrics(SM_CXSMICON)
 /* space around icon (forces icon to center of KDE systray area) */
 #define ICON_BORDER  4

 static LRESULT WINAPI adaptor_wndproc(HWND window, UINT msg,
                                       WPARAM wparam, LPARAM lparam)
 {
     struct icon *icon = NULL;
     BOOL ret;

     WINE_TRACE("hwnd=%p, msg=0x%x\n", window, msg);

     /* set the icon data for the window from the data passed into CreateWindow */
     if (msg == WM_NCCREATE)
         SetWindowLongPtrW(window, GWLP_USERDATA, (LPARAM)((const CREATESTRUCT *)lparam)->lpCreateParams);

     icon = (struct icon *) GetWindowLongPtr(window, GWLP_USERDATA);

     switch (msg)
     {
         case WM_PAINT:
         {
             RECT rc;
             int top;
             PAINTSTRUCT  ps;
             HDC          hdc;

             WINE_TRACE("painting\n");

             hdc = BeginPaint(window, &ps);
             GetClientRect(window, &rc);

             /* calculate top so we can deal with arbitrary sized trays */
             top = ((rc.bottom-rc.top)/2) - ((ICON_SIZE)/2);

             DrawIconEx(hdc, (ICON_BORDER/2), top, icon->image,
                        ICON_SIZE, ICON_SIZE, 0, 0, DI_DEFAULTSIZE|DI_NORMAL);

             EndPaint(window, &ps);
             break;
         }

         case WM_MOUSEMOVE:
         case WM_LBUTTONDOWN:
         case WM_LBUTTONUP:
         case WM_RBUTTONDOWN:
         case WM_RBUTTONUP:
         case WM_MBUTTONDOWN:
         case WM_MBUTTONUP:
         case WM_LBUTTONDBLCLK:
         case WM_RBUTTONDBLCLK:
         case WM_MBUTTONDBLCLK:
             /* notify the owner hwnd of the message */
             WINE_TRACE("relaying 0x%x\n", msg);
             ret = PostMessage(icon->owner, icon->callback_message, (WPARAM) icon->id, (LPARAM) msg);
             if (!ret && (GetLastError() == ERROR_INVALID_HANDLE))
             {
                 WINE_WARN("application window was destroyed without removing "
                           "notification icon, removing automatically\n");
                 DestroyWindow(window);
             }
             break;

         case WM_NCDESTROY:
             SetWindowLongPtr(window, GWLP_USERDATA, 0);

             list_remove(&icon->entry);
             DestroyIcon(icon->image);
             HeapFree(GetProcessHeap(), 0, icon);
             break;

         default:
             return DefWindowProc(window, msg, wparam, lparam);
     }

     return 0;
 }


 /* listener code */

 static struct icon *get_icon(HWND owner, UINT id)
 {
     struct icon *this;

     /* search for the icon */
     LIST_FOR_EACH_ENTRY( this, &tray.icons, struct icon, entry )
         if ((this->id == id) && (this->owner == owner)) return this;

     return NULL;
 }

 static void set_tooltip(struct icon *icon, WCHAR *szTip, BOOL modify)
 {
     TTTOOLINFOW ti;

     ti.cbSize = sizeof(TTTOOLINFOW);
     ti.uFlags = TTF_SUBCLASS | TTF_IDISHWND;
     ti.hwnd = icon->window;
     ti.hinst = 0;
     ti.uId = (UINT_PTR)icon->window;
     ti.lpszText = szTip;
     ti.lParam = 0;
     ti.lpReserved = NULL;

     if (modify)
         SendMessageW(icon->tooltip, TTM_UPDATETIPTEXTW, 0, (LPARAM)&ti);
     else
         SendMessageW(icon->tooltip, TTM_ADDTOOLW, 0, (LPARAM)&ti);
 }

 static void modify_icon(NOTIFYICONDATAW *nid, BOOL modify_tooltip)
 {
     struct icon    *icon;

     WINE_TRACE("id=0x%x, hwnd=%p\n", nid->uID, nid->hWnd);

     /* demarshal the request from the NID */
     icon = get_icon(nid->hWnd, nid->uID);
     if (!icon)
     {
         WINE_WARN("Invalid icon ID (0x%x) for HWND %p\n", nid->uID, nid->hWnd);
         return;
     }

     if (nid->uFlags & NIF_ICON)
     {
         if (icon->image) DestroyIcon(icon->image);
         icon->image = CopyIcon(nid->hIcon);

         RedrawWindow(icon->window, NULL, NULL, RDW_ERASE | RDW_INVALIDATE | RDW_UPDATENOW);
     }

     if (nid->uFlags & NIF_MESSAGE)
     {
         icon->callback_message = nid->uCallbackMessage;
     }
     if (nid->uFlags & NIF_TIP)
     {
         set_tooltip(icon, nid->szTip, modify_tooltip);
     }
 }

 static void add_icon(NOTIFYICONDATAW *nid)
 {
     RECT rect;
     struct icon  *icon;
     static const WCHAR adaptor_windowname[] = /* Wine System Tray Adaptor */ {'W','i','n','e',' ','S','y','s','t','e','m',' ','T','r','a','y',' ','A','d','a','p','t','o','r',0};
     static BOOL tooltps_initialized = FALSE;

     WINE_TRACE("id=0x%x, hwnd=%p\n", nid->uID, nid->hWnd);

     if ((icon = get_icon(nid->hWnd, nid->uID)))
     {
         WINE_WARN("duplicate tray icon add, buggy app?\n");
         return;
     }

     if (!(icon = HeapAlloc(GetProcessHeap(), HEAP_ZERO_MEMORY, sizeof(*icon))))
     {
         WINE_ERR("out of memory\n");
         return;
     }

     icon->id    = nid->uID;
     icon->owner = nid->hWnd;
     icon->image = NULL;

     rect.left = 0;
     rect.top = 0;
     rect.right = GetSystemMetrics(SM_CXSMICON) + ICON_BORDER;
     rect.bottom = GetSystemMetrics(SM_CYSMICON) + ICON_BORDER;
     AdjustWindowRect(&rect, WS_CLIPSIBLINGS | WS_CAPTION, FALSE);

     /* create the adaptor window */
     icon->window = CreateWindowEx(WS_EX_TRAYWINDOW, adaptor_classname,
                                   adaptor_windowname,
                                   WS_CLIPSIBLINGS | WS_CAPTION,
                                   CW_USEDEFAULT, CW_USEDEFAULT,
                                   rect.right - rect.left,
                                   rect.bottom - rect.top,
                                   NULL, NULL, NULL, icon);

     if (!hide_systray)
         ShowWindow(icon->window, SW_SHOWNA);

     /* create icon tooltip */

     /* Register tooltip classes if this is the first icon */
     if (!tooltps_initialized)
     {
         INITCOMMONCONTROLSEX init_tooltip;

         init_tooltip.dwSize = sizeof(INITCOMMONCONTROLSEX);
         init_tooltip.dwICC = ICC_TAB_CLASSES;

         InitCommonControlsEx(&init_tooltip);
         tooltps_initialized = TRUE;
     }

     icon->tooltip = CreateWindowEx(WS_EX_TOPMOST, TOOLTIPS_CLASS, NULL,
                                    WS_POPUP | TTS_ALWAYSTIP,
                                    CW_USEDEFAULT, CW_USEDEFAULT,
                                    CW_USEDEFAULT, CW_USEDEFAULT,
                                    icon->window, NULL, NULL, NULL);

     list_add_tail(&tray.icons, &icon->entry);

     modify_icon(nid, FALSE);
 }

 static void delete_icon(const NOTIFYICONDATAW *nid)
 {
     struct icon *icon = get_icon(nid->hWnd, nid->uID);

     WINE_TRACE("id=0x%x, hwnd=%p\n", nid->uID, nid->hWnd);

     if (!icon)
     {
         WINE_ERR("invalid tray icon ID specified: %ud\n", nid->uID);
         return;
     }

     DestroyWindow(icon->tooltip);
     DestroyWindow(icon->window);
 }

 static void handle_incoming(HWND hwndSource, COPYDATASTRUCT *cds)
 {
     NOTIFYICONDATAW nid;

     if (cds->cbData < sizeof(nid)) return;
     memcpy(&nid, cds->lpData, sizeof(nid));

     /* FIXME: if statement only needed because we don't support interprocess
      * icon handles */
     if ((nid.uFlags & NIF_ICON) && (cds->cbData >= sizeof(nid) + 2 * sizeof(BITMAP)))
     {
         LONG cbMaskBits;
         LONG cbColourBits;
         BITMAP bmMask;
         BITMAP bmColour;
         const char *buffer = cds->lpData;

         buffer += sizeof(nid);

         memcpy(&bmMask, buffer, sizeof(bmMask));
         buffer += sizeof(bmMask);
         memcpy(&bmColour, buffer, sizeof(bmColour));
         buffer += sizeof(bmColour);

         cbMaskBits = (bmMask.bmPlanes * bmMask.bmWidth * bmMask.bmHeight * bmMask.bmBitsPixel) / 8;
         cbColourBits = (bmColour.bmPlanes * bmColour.bmWidth * bmColour.bmHeight * bmColour.bmBitsPixel) / 8;

         if (cds->cbData < sizeof(nid) + 2 * sizeof(BITMAP) + cbMaskBits + cbColourBits)
         {
             WINE_ERR("buffer underflow\n");
             return;
         }

         /* sanity check */
         if ((bmColour.bmWidth != bmMask.bmWidth) || (bmColour.bmHeight != bmMask.bmHeight))
         {
             WINE_ERR("colour and mask bitmaps aren't consistent\n");
             return;
         }

         nid.hIcon = CreateIcon(NULL, bmColour.bmWidth, bmColour.bmHeight,
                                bmColour.bmPlanes, bmColour.bmBitsPixel,
                                buffer, buffer + cbMaskBits);
     }

     switch (cds->dwData)
     {
     case NIM_ADD:
         add_icon(&nid);
         break;
     case NIM_DELETE:
         delete_icon(&nid);
         break;
     case NIM_MODIFY:
         modify_icon(&nid, TRUE);
         break;
     default:
         WINE_FIXME("unhandled tray message: %ld\n", cds->dwData);
         break;
     }

     /* FIXME: if statement only needed because we don't support interprocess
      * icon handles */
     if (nid.uFlags & NIF_ICON)
         DestroyIcon(nid.hIcon);
 }

 static LRESULT WINAPI listener_wndproc(HWND window, UINT msg,
                                        WPARAM wparam, LPARAM lparam)
 {
     if (msg == WM_COPYDATA)
         handle_incoming((HWND)wparam, (COPYDATASTRUCT *)lparam);

     return DefWindowProc(window, msg, wparam, lparam);
 }


 static BOOL is_systray_hidden(void)
 {
     const WCHAR show_systray_keyname[] = {'S','o','f','t','w','a','r','e','\\','W','i','n','e','\\',
                                           'X','1','1',' ','D','r','i','v','e','r',0};
     const WCHAR show_systray_valuename[] = {'S','h','o','w','S','y','s','t','r','a','y',0};
     HKEY hkey;
     BOOL ret = FALSE;

     /* @@ Wine registry key: HKCU\Software\Wine\X11 Driver */
     if (RegOpenKeyW(HKEY_CURRENT_USER, show_systray_keyname, &hkey) == ERROR_SUCCESS)
     {
         WCHAR value[10];
         DWORD type, size = sizeof(value);
         if (RegQueryValueExW(hkey, show_systray_valuename, 0, &type, (LPBYTE)&value, &size) == ERROR_SUCCESS)
         {
             ret = IS_OPTION_FALSE(value[0]);
         }
         RegCloseKey(hkey);
     }
     return ret;
 }

 /* this function creates the the listener window */
 void initialize_systray(void)
 {
     WNDCLASSEX class;
     static const WCHAR classname[] = /* Shell_TrayWnd */ {'S','h','e','l','l','_','T','r','a','y','W','n','d',0};
     static const WCHAR winname[]   = /* Wine Systray Listener */
         {'W','i','n','e',' ','S','y','s','t','r','a','y',' ','L','i','s','t','e','n','e','r',0};

     WINE_TRACE("initiaizing\n");

     hide_systray = is_systray_hidden();

     list_init(&tray.icons);

     /* register the systray listener window class */
     ZeroMemory(&class, sizeof(class));
     class.cbSize        = sizeof(class);
     class.lpfnWndProc   = &listener_wndproc;
     class.hInstance     = NULL;
     class.hIcon         = LoadIcon(0, IDI_WINLOGO);
     class.hCursor       = LoadCursor(0, IDC_ARROW);
     class.hbrBackground = (HBRUSH) COLOR_WINDOW;
     class.lpszClassName = (WCHAR *) &classname;

     if (!RegisterClassEx(&class))
     {
         WINE_ERR("Could not register SysTray window class\n");
         return;
     }

     /* now register the adaptor window class */
     ZeroMemory(&class, sizeof(class));
     class.cbSize        = sizeof(class);
     class.lpfnWndProc   = adaptor_wndproc;
     class.hInstance     = NULL;
     class.hIcon         = LoadIcon(0, IDI_WINLOGO);
     class.hCursor       = LoadCursor(0, IDC_ARROW);
     class.hbrBackground = (HBRUSH) COLOR_WINDOW;
     class.lpszClassName = adaptor_classname;
     class.style         = CS_SAVEBITS | CS_DBLCLKS;

     if (!RegisterClassEx(&class))
     {
         WINE_ERR("Could not register adaptor class\n");
         return;
     }

     tray.window = CreateWindow(classname, winname, WS_OVERLAPPED,
                                CW_USEDEFAULT, CW_USEDEFAULT,
                                0, 0, 0, 0, 0, 0);

     if (!tray.window)
     {
         WINE_ERR("Could not create tray window\n");
         return;
     }
 }
	/*
	* Copyright (C) 2004 Mike Hearn, for CodeWeavers
	* Copyright (C) 2005 Robert Shearman
	*
	* This library is free software; you can redistribute it and/or
	* modify it under the terms of the GNU Lesser General Public
	* License as published by the Free Software Foundation; either
	* version 2.1 of the License, or (at your option) any later version.
	*
	* This library is distributed in the hope that it will be useful,
	* but WITHOUT ANY WARRANTY; without even the implied warranty of
	* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
	* Lesser General Public License for more details.
	*
	* You should have received a copy of the GNU Lesser General Public
	* License along with this library; if not, write to the Free Software
	* Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301, USA
	*/

	/* There are two types of window involved here. The first is the
	* listener window. This is like the taskbar in Windows. It doesn't
	* ever appear on-screen in our implementation, instead we create
	* individual mini "adaptor" windows which are docked by the native
	* systray host.
	*
	* In future for those who don't have a systray we could make the
	* listener window more clever so it can draw itself like the Windows
	* tray area does (with a clock and stuff).
	*/

	#include <assert.h>

	#define UNICODE
	#define _WIN32_IE 0x500
	#include <windows.h>
	#include <commctrl.h>

	#include <wine/debug.h>
	#include <wine/list.h>

	#include "explorer_private.h"

	WINE_DEFAULT_DEBUG_CHANNEL(systray);

	#define IS_OPTION_FALSE(ch) \
	((ch) == 'n' \|\| (ch) == 'N' \|\| (ch) == 'f' \|\| (ch) == 'F' \|\| (ch) == '0')

	static const WCHAR adaptor_classname[] = /* Adaptor */ {'A','d','a','p','t','o','r',0};

	/* tray state */
	struct tray
	{
	HWND window;
	struct list icons;
	};

	/* an individual systray icon, unpacked from the NOTIFYICONDATA and always in unicode */
	struct icon
	{
	struct list entry;
	HICON image; /* the image to render */
	HWND owner; /* the HWND passed in to the Shell_NotifyIcon call */
	HWND window; /* the adaptor window */
	HWND tooltip; /* Icon tooltip */
	UINT id; /* the unique id given by the app */
	UINT callback_message;
	};

	static struct tray tray;
	static BOOL hide_systray;

	/* adaptor code */

	#define ICON_SIZE GetSystemMetrics(SM_CXSMICON)
	/* space around icon (forces icon to center of KDE systray area) */
	#define ICON_BORDER 4

	static LRESULT WINAPI adaptor_wndproc(HWND window, UINT msg,
	WPARAM wparam, LPARAM lparam)
	{
	struct icon *icon = NULL;
	BOOL ret;

	WINE_TRACE("hwnd=%p, msg=0x%x\n", window, msg);

	/* set the icon data for the window from the data passed into CreateWindow */
	if (msg == WM_NCCREATE)
	SetWindowLongPtrW(window, GWLP_USERDATA, (LPARAM)((const CREATESTRUCT *)lparam)->lpCreateParams);

	icon = (struct icon *) GetWindowLongPtr(window, GWLP_USERDATA);

	switch (msg)
	{
	case WM_PAINT:
	{
	RECT rc;
	int top;
	PAINTSTRUCT ps;
	HDC hdc;

	WINE_TRACE("painting\n");

	hdc = BeginPaint(window, &ps);
	GetClientRect(window, &rc);

	/* calculate top so we can deal with arbitrary sized trays */
	top = ((rc.bottom-rc.top)/2) - ((ICON_SIZE)/2);

	DrawIconEx(hdc, (ICON_BORDER/2), top, icon->image,
	ICON_SIZE, ICON_SIZE, 0, 0, DI_DEFAULTSIZE\|DI_NORMAL);

	EndPaint(window, &ps);
	break;
	}

	case WM_MOUSEMOVE:
	case WM_LBUTTONDOWN:
	case WM_LBUTTONUP:
	case WM_RBUTTONDOWN:
	case WM_RBUTTONUP:
	case WM_MBUTTONDOWN:
	case WM_MBUTTONUP:
	case WM_LBUTTONDBLCLK:
	case WM_RBUTTONDBLCLK:
	case WM_MBUTTONDBLCLK:
	/* notify the owner hwnd of the message */
	WINE_TRACE("relaying 0x%x\n", msg);
	ret = PostMessage(icon->owner, icon->callback_message, (WPARAM) icon->id, (LPARAM) msg);
	if (!ret && (GetLastError() == ERROR_INVALID_HANDLE))
	{
	WINE_WARN("application window was destroyed without removing "
	"notification icon, removing automatically\n");
	DestroyWindow(window);
	}
	break;

	case WM_NCDESTROY:
	SetWindowLongPtr(window, GWLP_USERDATA, 0);

	list_remove(&icon->entry);
	DestroyIcon(icon->image);
	HeapFree(GetProcessHeap(), 0, icon);
	break;

	default:
	return DefWindowProc(window, msg, wparam, lparam);
	}

	return 0;
	}


	/* listener code */

	static struct icon *get_icon(HWND owner, UINT id)
	{
	struct icon *this;

	/* search for the icon */
	LIST_FOR_EACH_ENTRY( this, &tray.icons, struct icon, entry )
	if ((this->id == id) && (this->owner == owner)) return this;

	return NULL;
	}

	static void set_tooltip(struct icon icon, WCHAR szTip, BOOL modify)
	{
	TTTOOLINFOW ti;

	ti.cbSize = sizeof(TTTOOLINFOW);
	ti.uFlags = TTF_SUBCLASS \| TTF_IDISHWND;
	ti.hwnd = icon->window;
	ti.hinst = 0;
	ti.uId = (UINT_PTR)icon->window;
	ti.lpszText = szTip;
	ti.lParam = 0;
	ti.lpReserved = NULL;

	if (modify)
	SendMessageW(icon->tooltip, TTM_UPDATETIPTEXTW, 0, (LPARAM)&ti);
	else
	SendMessageW(icon->tooltip, TTM_ADDTOOLW, 0, (LPARAM)&ti);
	}

	static void modify_icon(NOTIFYICONDATAW *nid, BOOL modify_tooltip)
	{
	struct icon *icon;

	WINE_TRACE("id=0x%x, hwnd=%p\n", nid->uID, nid->hWnd);

	/* demarshal the request from the NID */
	icon = get_icon(nid->hWnd, nid->uID);
	if (!icon)
	{
	WINE_WARN("Invalid icon ID (0x%x) for HWND %p\n", nid->uID, nid->hWnd);
	return;
	}

	if (nid->uFlags & NIF_ICON)
	{
	if (icon->image) DestroyIcon(icon->image);
	icon->image = CopyIcon(nid->hIcon);

	RedrawWindow(icon->window, NULL, NULL, RDW_ERASE \| RDW_INVALIDATE \| RDW_UPDATENOW);
	}

	if (nid->uFlags & NIF_MESSAGE)
	{
	icon->callback_message = nid->uCallbackMessage;
	}
	if (nid->uFlags & NIF_TIP)
	{
	set_tooltip(icon, nid->szTip, modify_tooltip);
	}
	}

	static void add_icon(NOTIFYICONDATAW *nid)
	{
	RECT rect;
	struct icon *icon;
	static const WCHAR adaptor_windowname[] = /* Wine System Tray Adaptor */ {'W','i','n','e',' ','S','y','s','t','e','m',' ','T','r','a','y',' ','A','d','a','p','t','o','r',0};
	static BOOL tooltps_initialized = FALSE;

	WINE_TRACE("id=0x%x, hwnd=%p\n", nid->uID, nid->hWnd);

	if ((icon = get_icon(nid->hWnd, nid->uID)))
	{
	WINE_WARN("duplicate tray icon add, buggy app?\n");
	return;
	}

	if (!(icon = HeapAlloc(GetProcessHeap(), HEAP_ZERO_MEMORY, sizeof(*icon))))
	{
	WINE_ERR("out of memory\n");
	return;
	}

	icon->id = nid->uID;
	icon->owner = nid->hWnd;
	icon->image = NULL;

	rect.left = 0;
	rect.top = 0;
	rect.right = GetSystemMetrics(SM_CXSMICON) + ICON_BORDER;
	rect.bottom = GetSystemMetrics(SM_CYSMICON) + ICON_BORDER;
	AdjustWindowRect(&rect, WS_CLIPSIBLINGS \| WS_CAPTION, FALSE);

	/* create the adaptor window */
	icon->window = CreateWindowEx(WS_EX_TRAYWINDOW, adaptor_classname,
	adaptor_windowname,
	WS_CLIPSIBLINGS \| WS_CAPTION,
	CW_USEDEFAULT, CW_USEDEFAULT,
	rect.right - rect.left,
	rect.bottom - rect.top,
	NULL, NULL, NULL, icon);

	if (!hide_systray)
	ShowWindow(icon->window, SW_SHOWNA);

	/* create icon tooltip */

	/* Register tooltip classes if this is the first icon */
	if (!tooltps_initialized)
	{
	INITCOMMONCONTROLSEX init_tooltip;

	init_tooltip.dwSize = sizeof(INITCOMMONCONTROLSEX);
	init_tooltip.dwICC = ICC_TAB_CLASSES;

	InitCommonControlsEx(&init_tooltip);
	tooltps_initialized = TRUE;
	}

	icon->tooltip = CreateWindowEx(WS_EX_TOPMOST, TOOLTIPS_CLASS, NULL,
	WS_POPUP \| TTS_ALWAYSTIP,
	CW_USEDEFAULT, CW_USEDEFAULT,
	CW_USEDEFAULT, CW_USEDEFAULT,
	icon->window, NULL, NULL, NULL);

	list_add_tail(&tray.icons, &icon->entry);

	modify_icon(nid, FALSE);
	}

	static void delete_icon(const NOTIFYICONDATAW *nid)
	{
	struct icon *icon = get_icon(nid->hWnd, nid->uID);

	WINE_TRACE("id=0x%x, hwnd=%p\n", nid->uID, nid->hWnd);

	if (!icon)
	{
	WINE_ERR("invalid tray icon ID specified: %ud\n", nid->uID);
	return;
	}

	DestroyWindow(icon->tooltip);
	DestroyWindow(icon->window);
	}

	static void handle_incoming(HWND hwndSource, COPYDATASTRUCT *cds)
	{
	NOTIFYICONDATAW nid;

	if (cds->cbData < sizeof(nid)) return;
	memcpy(&nid, cds->lpData, sizeof(nid));

	/* FIXME: if statement only needed because we don't support interprocess
	* icon handles */
	if ((nid.uFlags & NIF_ICON) && (cds->cbData >= sizeof(nid) + 2 * sizeof(BITMAP)))
	{
	LONG cbMaskBits;
	LONG cbColourBits;
	BITMAP bmMask;
	BITMAP bmColour;
	const char *buffer = cds->lpData;

	buffer += sizeof(nid);

	memcpy(&bmMask, buffer, sizeof(bmMask));
	buffer += sizeof(bmMask);
	memcpy(&bmColour, buffer, sizeof(bmColour));
	buffer += sizeof(bmColour);

	cbMaskBits = (bmMask.bmPlanes * bmMask.bmWidth * bmMask.bmHeight * bmMask.bmBitsPixel) / 8;
	cbColourBits = (bmColour.bmPlanes * bmColour.bmWidth * bmColour.bmHeight * bmColour.bmBitsPixel) / 8;

	if (cds->cbData < sizeof(nid) + 2 * sizeof(BITMAP) + cbMaskBits + cbColourBits)
	{
	WINE_ERR("buffer underflow\n");
	return;
	}

	/* sanity check */
	if ((bmColour.bmWidth != bmMask.bmWidth) \|\| (bmColour.bmHeight != bmMask.bmHeight))
	{
	WINE_ERR("colour and mask bitmaps aren't consistent\n");
	return;
	}

	nid.hIcon = CreateIcon(NULL, bmColour.bmWidth, bmColour.bmHeight,
	bmColour.bmPlanes, bmColour.bmBitsPixel,
	buffer, buffer + cbMaskBits);
	}

	switch (cds->dwData)
	{
	case NIM_ADD:
	add_icon(&nid);
	break;
	case NIM_DELETE:
	delete_icon(&nid);
	break;
	case NIM_MODIFY:
	modify_icon(&nid, TRUE);
	break;
	default:
	WINE_FIXME("unhandled tray message: %ld\n", cds->dwData);
	break;
	}

	/* FIXME: if statement only needed because we don't support interprocess
	* icon handles */
	if (nid.uFlags & NIF_ICON)
	DestroyIcon(nid.hIcon);
	}

	static LRESULT WINAPI listener_wndproc(HWND window, UINT msg,
	WPARAM wparam, LPARAM lparam)
	{
	if (msg == WM_COPYDATA)
	handle_incoming((HWND)wparam, (COPYDATASTRUCT *)lparam);

	return DefWindowProc(window, msg, wparam, lparam);
	}


	static BOOL is_systray_hidden(void)
	{
	const WCHAR show_systray_keyname[] = {'S','o','f','t','w','a','r','e','\\','W','i','n','e','\\',
	'X','1','1',' ','D','r','i','v','e','r',0};
	const WCHAR show_systray_valuename[] = {'S','h','o','w','S','y','s','t','r','a','y',0};
	HKEY hkey;
	BOOL ret = FALSE;

	/* @@ Wine registry key: HKCU\Software\Wine\X11 Driver */
	if (RegOpenKeyW(HKEY_CURRENT_USER, show_systray_keyname, &hkey) == ERROR_SUCCESS)
	{
	WCHAR value[10];
	DWORD type, size = sizeof(value);
	if (RegQueryValueExW(hkey, show_systray_valuename, 0, &type, (LPBYTE)&value, &size) == ERROR_SUCCESS)
	{
	ret = IS_OPTION_FALSE(value[0]);
	}
	RegCloseKey(hkey);
	}
	return ret;
	}

	/* this function creates the the listener window */
	void initialize_systray(void)
	{
	WNDCLASSEX class;
	static const WCHAR classname[] = /* Shell_TrayWnd */ {'S','h','e','l','l','_','T','r','a','y','W','n','d',0};
	static const WCHAR winname[] = /* Wine Systray Listener */
	{'W','i','n','e',' ','S','y','s','t','r','a','y',' ','L','i','s','t','e','n','e','r',0};

	WINE_TRACE("initiaizing\n");

	hide_systray = is_systray_hidden();

	list_init(&tray.icons);

	/* register the systray listener window class */
	ZeroMemory(&class, sizeof(class));
	class.cbSize = sizeof(class);
	class.lpfnWndProc = &listener_wndproc;
	class.hInstance = NULL;
	class.hIcon = LoadIcon(0, IDI_WINLOGO);
	class.hCursor = LoadCursor(0, IDC_ARROW);
	class.hbrBackground = (HBRUSH) COLOR_WINDOW;
	class.lpszClassName = (WCHAR *) &classname;

	if (!RegisterClassEx(&class))
	{
	WINE_ERR("Could not register SysTray window class\n");
	return;
	}

	/* now register the adaptor window class */
	ZeroMemory(&class, sizeof(class));
	class.cbSize = sizeof(class);
	class.lpfnWndProc = adaptor_wndproc;
	class.hInstance = NULL;
	class.hIcon = LoadIcon(0, IDI_WINLOGO);
	class.hCursor = LoadCursor(0, IDC_ARROW);
	class.hbrBackground = (HBRUSH) COLOR_WINDOW;
	class.lpszClassName = adaptor_classname;
	class.style = CS_SAVEBITS \| CS_DBLCLKS;

	if (!RegisterClassEx(&class))
	{
	WINE_ERR("Could not register adaptor class\n");
	return;
	}

	tray.window = CreateWindow(classname, winname, WS_OVERLAPPED,
	CW_USEDEFAULT, CW_USEDEFAULT,
	0, 0, 0, 0, 0, 0);

	if (!tray.window)
	{
	WINE_ERR("Could not create tray window\n");
	return;
	}
	}